单项选择题

Speech is the （） ability possessed only by human beings.

A．unique
B．average
C．collective
D．single

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单项选择题

All the following expenses are included in the term bill EXCEPT （）.

A．health insurance
B．sports fees
C．recreation fees
D．dorm fees

单项选择题

In an automated highway system, all the driver needs to do is （）.

A．keep in the right lane
B．wait to arrive at his destination
C．keep in constant touch with the computer center
D．inform the system of his destination by phone